JP2010018993A - Connection fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection fitting capable of connecting two cables mutually, simply, and easily and fixing one cable on the other cable without fail. <P>SOLUTION: This connection fitting is provided with plate-like members 110, 112 covering the first cable 90 by bolt connection, being plastically deformable depending on tightening force of bolt connection when covering the first cable, and fixed on the first cable and a cable connection part 118 connected with the plate-like members or nipped and held by at least two plate-like members and having one end connected with the first cable and the other end connected with the second cable different from the first cable. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a connection fitting, and more particularly to a connection fitting suitable for connecting at least two cables.

  In a suspension structure such as a suspension bridge, a main cable is supported by a main structure such as a main tower or a column member. Then, the main cable and the suspension cable are connected via a connection fitting, and the suspension cable supports the component elements such as the girder member while hanging.

  About the connection metal fitting which connects a main cable and a suspension cable, it is disclosed by patent document 1 and 2, for example. The connecting metal fittings of Patent Documents 1 and 2 are members that are long in the longitudinal direction of the main cable, are attached to the main cable by bolting, and are connected to the suspension cable at the lower portion to suspend the suspension cable.

  With reference to FIG.1 and FIG.2, the conventional coupling metal fitting 10 is demonstrated. FIG. 1 is a perspective view showing a conventional connecting fitting 10. FIG. 2 is an exploded perspective view showing a conventional connecting metal fitting 10, and is a view in which the connecting metal fitting 10 shown in FIG. 1 is disassembled and each component is viewed from above.

  The connecting metal fitting 10 includes, for example, a pair of fixing members 12A and 12B that are installed to face each other, a bolt 22, a nut 24, a washer 26, a pin 32, and the like. The fixing members 12A and 12B are attached to the main cable 90 by bolting. The connection fitting 10 is connected to the suspension cable 92 via the pin 32 at the connection portion 14 provided on the fixing members 12A and 12B. The fixing members 12A and 12B are, for example, steel members, and the main cable 90 and the suspension cable 92 are, for example, steel wire ropes.

  Patent Document 3 discloses a connection fitting for connecting a wire rope and another member. The connection fitting is a cylindrical member and is provided with a fastening hole into which the wire rope is inserted. Then, the wire rope is inserted into the fastening hole, and the connection fitting is compressed from the outer surface by a dedicated machine to connect the wire rope and the connection fitting.

JP-A-11-323824 JP 2002-371515 A Utility Model Registration No. 3089276

  By the way, the connecting metal fitting 10 shown in FIG.1 and FIG.2 clamps the main cable 90 by the bolt coupling | bonding, making the fixing members 12A and 12B oppose each other. At this time, the fixing members 12 </ b> A and 12 </ b> B need to be fixed so as not to move with respect to the main cable 90. In the conventional connecting fitting 10, the fixing members 12A and 12B and the main cable 90 are fixed by a frictional force. Therefore, the fixing members 12A and 12B fasten the main cable 90 so that a frictional force is generated.

  At this time, since a predetermined tightening pressure must be applied to the main cable 90, the fixing members 12A and 12B have an elastic design. That is, when the fixing members 12A and 12B are yielded by tightening the bolts, a predetermined tightening pressure cannot be applied. Therefore, the fixing members 12A and 12B are formed thick so that the fixing members 12A and 12B do not yield.

  Further, if the bolt connection is strongly tightened, a high tightening pressure (side pressure) is applied to the contact surface of the main cable 90 from the fixing members 12A and 12B. Therefore, it is necessary to reduce the lateral pressure so that the fixing members 12A and 12B do not damage the main cable 90. For this reason, the fixing members 12 </ b> A and 12 </ b> B have to have long surfaces in contact with the main cable 90 in the longitudinal direction of the main cable 90. For the above reasons, the conventional connecting fitting 10 has a large capacity and a heavy weight.

  Further, the fixing members 12A and 12B face each other so as to be broken in the vertical direction of the cross section of the main cable 90, and the suspension cable 92 is supported by the pins 32 sandwiched between the fixing members 12A and 12B. Therefore, when the bolt connection between the fixing members 12A and 12B is released, the pin 32 is also removed, and there is a problem that the suspension cable 92 is dropped from the main cable 90.

  Further, as in Patent Document 3, when a wire rope is inserted into a fastening hole and the connection fitting is compressed from the outer surface, it is necessary to yield the cylindrical connection fitting using a dedicated machine. For this reason, it is not possible to connect the connection fitting at the site where the wire rope is installed, and it is necessary to connect the wire rope and the connection fitting in advance at a factory or the like.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to allow two cables to be connected simply and easily, and one cable to another cable. It is an object of the present invention to provide a new and improved connection fitting that can be securely fixed.

  In order to solve the above-described problem, according to one aspect of the present invention, a first cable is covered with a bolt connection, and when the first cable is covered, the first cable is plastically deformed by a tightening force of the bolt connection. A plate-like member fixed to the plate, connected to the plate-like member or sandwiched between at least two plate-like members, one end connected to the first cable, and the other end connected to a second cable different from the first cable There is provided a connecting bracket comprising a cable connecting portion.

  The plate-like member may be plastically deformed on the contact surface with the first cable by a bolting tightening force.

  The plate member may include at least two split plate members, and the split plate members may be bolted to each other.

  At least one of the split plate-like members is plastically deformed by the tightening force of the bolt connection, and at least one split plate-like member other than the split plate-like member that is plastically deformed is a material that is not plastically deformed by the tightening force of the bolt connection. There may be.

  The plate member and the cable connecting portion may be formed integrally. Moreover, the said plate-shaped member and a cable connection part may be formed separately.

  The cable connecting portion may be rotatable with respect to the first cable when sandwiched between at least two plate-like members.

  The cable connecting portion is formed on the inner surface facing the first cable so that the vicinity of the center bulges toward the first cable side compared to the axial end of the first cable, and is supported by the first cable. The supporting portion to be connected and one end thereof may be connected to the supporting portion, and the other end may have a connecting portion connected to the second cable.

  According to the present invention, two cables can be connected simply and easily, and one cable can be securely fixed to another cable.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

(First embodiment)
First, the connection metal fitting 100 according to the first embodiment of the present invention will be described.
FIG. 3 is a perspective view showing the connection fitting 100 according to the present embodiment. FIG. 4 is an exploded perspective view showing the connection fitting 100 according to the present embodiment, and is a view of the components seen from above by disassembling the connection fitting 100 of FIG. 3.
FIG. 5 is a side view showing the connection fitting 100 according to the present embodiment, and is a view of the connection fitting of FIG. 3 as viewed from the left side. FIG. 6 is a front view showing the connection fitting 100 according to the present embodiment. FIG. 7 is a cross-sectional view showing the connection fitting 100 according to the present embodiment, and is a view cut in a direction perpendicular to the length direction (axial direction) of the main cable 90 at the center of the connection fitting 100.

  The connection fitting 100 of the present embodiment includes, for example, a fixing member 110, two fixing members 120, a bolt 132, a nut 134, washers 136 and 138, a pin 142, a pinning member 144, and the like. Here, the fixing members 110 and 120 are examples of plate-like members. The fixing members 110 and 120 are attached to the main cable 90 by bolt connection. The fixing members 110 and 120 may be formed into a shape as shown in FIGS. 3 to 7 by processing a flat plate member, or may be formed by a processing method such as casting or shaving. The connection fitting 100 is connected to the suspension cable 92 via a pin 142 at the cable connection portion 118 of the fixing member 110.

  Here, the main cable 90 (first cable) and the suspension cable 92 (second cable) are, for example, steel wire ropes, which are ropes in which a plurality of steel wires are twisted. The main cable 90 is supported by a main structure such as a main tower or a pillar in a suspension structure such as a suspension bridge. On the surface of the main cable 90, spiral irregularities are usually formed by twisting steel wires. The suspension cable 92 is connected to the main cable 90 via the coupling fitting 100 of the present embodiment, and suspends components such as a girder member of the suspension structure.

Hereinafter, each component of the connection metal fitting 100 will be described in detail.
The fixing member 110 is a plate-shaped steel member. The fixing member 110 includes, for example, a connecting portion 112 to which the bolt 132 is connected, a support portion 114 that is in contact with the main cable 90 and supported by the main cable 90, and a cable connecting portion that is connected to the suspension cable 92. 118.

  The connecting portion 112 is, for example, planar, and is formed with a bolt fastening hole 116 penetrating near the center. In the present embodiment, two connection portions 112 are provided at both ends of the end portion of the fixing member 110 so as to be connected to the support portion 114, and a total of four connection portions 112 are provided. The connection part 112 is disposed to face the connection part 122 of the fixing member 120. The connection part 112 transmits the tightening force by bolt coupling to the support part 114.

  The support portion 114 has, for example, a half-cylinder shape, and contacts the main cable 90 on the inner side of the half-cylinder when attached. The support portion 114 is further divided into a support region 114A and a connection region 114B.

  The support region 114A is connected to the connection portion 112 on both sides. The support region 114A is plastically deformed along the surface of the main cable 90 when the fixing member 110 is tightened by bolt connection. The support region 114A is configured with a plate thickness that is plastically deformed by tightening the bolt connection. For example, in the example shown in FIGS. 3 to 7, the plate thickness of the support region 114 </ b> A is about 10 mm for the main cable 90 having a diameter of about 40 mm. Note that the present invention is not limited to this size. Since the surface of the main cable 90 has spiral irregularities formed by twisting the steel wire, the support region 114A is plastically deformed in a shape along the irregularities of the main cable 90. As a result, the support region 114 </ b> A enters the recess of the main cable 90, and as a result, the fixing member 110 is fixed to the main cable 90. The shape of the support region 114A before being connected to the main cable 90 may be a length that takes into account the elongation of the member due to plastic deformation.

  The connection region 114B is connected to the support region 114A at both ends, and is connected to the cable connection part 118 on both sides. The connection region 114 </ b> B supports the load from the suspension cable 92 transmitted via the cable connection portion 118 with the main cable 90.

  The cable connecting portion 118 has, for example, a planar shape, and a pin hole 119 penetrating near the center is formed. The cable connecting portion 118 supports the load from the suspension cable 92 applied to the pin 142 and transmits the load to the upper support portion 114. Two cable connecting portions 118 are provided and arranged to face each other.

  The fixing member 120 is a plate-shaped steel member. The fixing member 120 can be divided into, for example, a connection part 122 to which the bolt 132 is connected and a support part 124 that contacts the main cable 90.

  The connecting portion 122 is, for example, planar, and is formed with a bolt fastening hole 126 penetrating near the center. In the present embodiment, two connecting portions 122 are provided on both sides of the fixing member 120 so as to be connected to the supporting portion 124. The connection part 122 is arranged to face the connection part 112 of the fixing member 110. The connection part 122 transmits the tightening force by bolt coupling to the support part 124.

  The support part 124 has, for example, a half-cylinder shape, and contacts the main cable 90 on the inner side of the half-cylinder when attached. The support part 124 is connected to the connection part 122 on both sides. The support portion 124 is plastically deformed along the surface of the main cable 90 when the fixing member 120 is tightened by bolt connection, similarly to the support region 114A of the fixing member 110. The support portion 124 is configured with a plate thickness that is plastically deformed by tightening the bolt connection. The support portion 124 is plastically deformed in a shape along the unevenness of the main cable 90. As a result, the support portion 124 enters the concave portion of the main cable 90, and as a result, the fixing member 120 is fixed to the main cable 90.

  The bolt 132, the nut 134, and the washers 136 and 138 are combined to respectively bolt the fixing members 110 and 120. The bolt 132 passes through the bolt fastening holes 116 and 126. In this embodiment, the bolts are coupled at four locations. The fixing members 110 and 120 are plastically deformed by a tightening force by bolt connection.

  The pin 142 and the pinning member 144 are combined with each other to support the suspension cable 92. The pin 142 passes through a pin hole 119 formed in the cable connecting portion 118. The end portion of the suspension cable 92 is processed with a toyo-lock end, and the suspension cable 92 is connected to the cable connecting portion 118 by the pin 142 passing through the ring formed by the suspension cable 92 and the pin hole 119. Is done.

  As described above, the fixing method by the plastic deformation of the support region 114A and the support portion 124 supports the fixing member 110 with a support force other than the frictional force. Therefore, the member can be made thinner as compared with the case where the main cable 90 is tightened only by the frictional force as in the conventional coupling fitting. For example, in the conventional example shown in FIGS. 1 and 2, since the fixing members 12A and 12B need to be configured so as not to be plastically deformed, for example, the fixing members 12A and 12B of the main cable 90 having a diameter of about 40 mm are used. The plate thickness was about 25 mm. On the other hand, the fixing members 110 and 120 of this embodiment may be about 10 mm, for example. Further, since the tightening pressure can be reduced as compared with the case of fixing only by the frictional force, the fixing members 110 and 120 do not need to be elongated in the length direction of the main cable 90.

(Second Embodiment)
Next, the connection metal fitting 200 according to the second embodiment of the present invention will be described. FIG. 8 is a perspective view showing the connection fitting 200 according to the present embodiment.

  The connecting metal fitting 200 of this embodiment includes, for example, two fixing members 210, two fixing members 220, a connecting member 215, a bolt 132, a nut 134, washers 136 and 138, a pin 142, a pinning member 144, and the like. Consists of.

  The fixing member 210 and the connecting member 215 of the present embodiment are formed by separately forming the fixing member 110 of the first embodiment described above. The connecting metal fitting 200 is fixed to the main cable 90 by a fixing member 210 and a fixing member 220 that are arranged to face each other. The connecting member 215 is disposed on the main cable 90 while being sandwiched between the fixing members 210 and 220. The fixing member 210 and the fixing member 220 are fixed to the main cable 90 by being plastically deformed by the tightening force due to the bolt connection, similarly to the support region 114A of the fixing member 110 or the fixing member 120 of the first embodiment.

  The connection member 215 can be divided into a support part 217 and a cable connection part 218. The support portion 217 corresponds to the connection region 114B of the fixing member 110 of the first embodiment, and the cable connection portion 218 corresponds to the cable connection portion 218 of the first embodiment.

  As in the present embodiment, the fixing members 210 and 220 and the connecting member 215 are divided and formed so that the connecting member 215 rotates around the main cable 90 separately from the fixing members 210 and 220. Can do.

  For example, the main cable 90 is in a twisted state before being installed in a structure. Therefore, when suspending a plurality of suspension cables 92 on the main cable 90, in general, in order to make the suspension direction constant, the main cable 90 is untwisted or marked in advance along the longitudinal direction. It was necessary to make the suspension direction constant with reference to the marking. And the conventional connection metal fitting was able to be installed through these procedures.

  On the other hand, according to this embodiment, since the connecting member 215 rotates around the main cable 90, the fixing members 210 and 220 can be fixed to the main cable 90 regardless of the twist of the main cable 90. Therefore, the connection fitting 200 can be installed more simply and quickly than in the past.

  Further, as described above, the fixing method by the plastic deformation of the fixing members 210 and 220 supports the main cable 90 with a supporting force other than the frictional force. Therefore, the member can be made thinner as compared with the case where the main cable 90 is tightened only by the frictional force as in the conventional coupling fitting. Further, since the tightening pressure can be reduced as compared with the case of fixing only by the frictional force, the fixing members 210 and 220 do not need to be lengthened in the length direction of the main cable 90. The fixing members 210 and 220 of the connection fitting 200 of the present embodiment can be, for example, about half the length of a conventional connection fitting or less.

(Third embodiment)
Next, a connection fitting 300 according to a third embodiment of the present invention will be described. FIG. 9 is a front view showing the connection fitting 300 according to the present embodiment. FIG. 10 is a cross-sectional view showing the connection member 315 of the connection fitting 300 according to the present embodiment, and is a view cut in the center of the connection member 315 in a direction parallel to the length direction of the main cable 90 at the time of attachment. .

  The connection fitting 300 of this embodiment includes, for example, two fixing members 210, two fixing members 220, a connecting member 315, bolts 132, nuts 134, washers 136 and 138, pins 142, pinning members 144, and the like. Consists of.

  The fixing member 210 of this embodiment is the same as that of the second embodiment described above, and is separate from the connecting member 315. The connection member 315 can be divided into a support part 317 and a cable connection part 318. The connecting member 315 is disposed on the main cable 90 while being sandwiched between the fixing members 210 and 220.

  As shown in FIGS. 9 and 10, the connecting member 315 has a shape in which the fixing members 210 and 220 side of the support portion 317 are warped from the upper part when attached to the main cable 90 (saddle-shaped shape). . The support portion 317 is formed on the inner surface facing the main cable 90 so that the vicinity of the center bulges toward the main cable 90 as compared to the end portion in the axial direction (length direction) of the main cable 90 and is supported by the main cable 90. Is done. Further, one end of the cable connecting portion 318 is connected to the support portion 317 and the other end is connected to the suspension cable 92. Thereby, when the connection fitting 300 is attached to the main cable 90, the angle of the connection member 315 with respect to the main cable 90 can be freely determined. For example, the main cable 90 is often connected to the structure with a certain gradient. Therefore, in the conventional connecting bracket, there are cases where a plurality of molds corresponding to the gradient are prepared in order to lower the suspension cable 92 vertically. On the other hand, according to this embodiment, it is possible to cope with the gradient of the main cable 90 with a simple configuration as shown in FIG. Therefore, it is not necessary to prepare a plurality of molds corresponding to the gradient, and only one shape needs to be prepared.

  Further, according to the present embodiment, the main cable 90 is bent and deformed due to the bulging shape of the support portion 317 at the time of attachment, so that the connecting member 315 is fixed to the main cable 90 without slipping due to frictional force. Is done. Furthermore, the conventional connecting metal fitting 10 as shown in FIGS. 1 and 2 includes fixing members 12A and 12B that face each other so as to be broken in the vertical direction of the cross section of the main cable 90 and sandwich the suspension cable 92. Therefore, when the bolt connection between the fixing members 12A and 12B is released, the suspension cable 92 is also dropped. On the other hand, according to the present embodiment, since the connecting member 315 has a saddle shape, even if the bolt coupling of the fixing members 210 and 220 is released, the suspension cable 92 is not dropped from the connecting member 315. Absent.

(Fourth embodiment)
Next, a connection fitting 400 according to a fourth embodiment of the present invention will be described. FIG. 11 is a plan view (A) and a side view (B) showing the fixing member 410 of the connection fitting 400 according to the present embodiment.

  In the fixing member 110 of the first embodiment described above, the support portion 114 has a semi-cylindrical shape, but the present invention is not limited to such an example. The fixing member before being attached to the main cable 90 may be planar, for example, like a fixing member 410 as shown in FIG.

  The fixing member 410 can be divided into a connection part 412 provided with a bolt fastening hole 416 and a support part 414 provided with a pin hole 419. When attaching the fixing portion 410 to the main cable 90, the support portion 414 is disposed along the main cable 90. The support portion 414 is plastically deformed along the outer periphery of the main cable 90 by bolting the connection portion 412. Thereby, the fixing member 410 and the main cable 90 are fixed to each other.

  According to the present embodiment, since it is not necessary to form the fixing member in a semi-cylindrical shape in advance, the processing becomes easier as compared with the first embodiment. Similarly, the fixing member 120 of the first embodiment and the fixing members 210 and 220 of the second embodiment can have a flat shape before being attached.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

  For example, in the above-described embodiment, both the fixing member 110 and the fixing member 120 are plastically deformed by a tightening force due to bolt connection, but the present invention is not limited to such an example. For example, one of the fixing members provided in a pair facing each other may be plastically deformed, and the other may be a material, a plate thickness, or a member shape that is not plastically deformed by the tightening force of the bolt connection. In the case of having this configuration, the member that plastically deforms fixes the main cable 90 with a frictional force and a supporting force other than the frictional force, and the member that does not plastically deform fixes the main cable 90 with a frictional force.

  Moreover, in the said embodiment, although the fixing member fixed to the main cable consists of two opposing split members, this invention is not limited to this example. For example, you may be comprised by three or more split members, and each split member is couple | bonded by the bolt coupling | bonding. Further, the fixing member may be a single member instead of the split member. At this time, the fixing member has a shape that substantially surrounds the entire circumference of the main rope 90, and is provided with two bolt fastening holes that face each other when one bolt penetrates. When the fixing member is composed of two split members, the bolts are coupled at two positions. However, when the fixing member is one member, the bolts may be coupled at one position.

  Moreover, in the said embodiment, although the edge part of the suspension cable 92 is processed into the end part of the toyo lock system, this invention is not limited to this example. For example, the end portion of the suspension cable 92 may be processed with a socket method or a single lock method. At this time, the shape of the cable connecting portion is a shape corresponding to each end processing, but detailed description thereof is omitted.

It is a perspective view which shows the conventional connection metal fitting. It is a disassembled perspective view which shows the conventional connection metal fitting. It is a perspective view which shows the connection metal fitting which concerns on the 1st Embodiment of this invention. It is a disassembled perspective view which shows the connection metal fitting which concerns on the same embodiment. It is a side view which shows the connection metal fitting which concerns on the same embodiment. It is a front view which shows the connection metal fitting which concerns on the same embodiment. It is sectional drawing which shows the connection metal fitting which concerns on the same embodiment. It is a perspective view which shows the connection metal fitting which concerns on the 2nd Embodiment of this invention. It is a front view which shows the connection metal fitting which concerns on the 3rd Embodiment of this invention. It is sectional drawing which shows the connection member of the connection metal fitting which concerns on the same embodiment. It is the top view (A) and side view (B) which show the fixing member of the connection metal fitting which concerns on the 4th Embodiment of this invention.

Explanation of symbols

90 main cable 92 suspension cable 100, 200, 300, 400 connecting bracket 110, 120, 210, 220, 410 fixing member 112, 122, 412 connecting portion 114, 124, 217, 317, 414 supporting portion 114A supporting region 114B connecting region 116, 126, 416 Bolt fastening holes 118, 218, 318, 418 Cable connecting portions 119, 419 Pin holes 132 Bolts 134 Nuts 136, 138 Washers 142 Pins 144 Pin fixing members 215, 315 Connecting members

Claims (8)

A plate-like member that covers the first cable with a bolt connection, is plastically deformed by a tightening force of the bolt connection when the first cable is covered, and is fixed to the first cable;
A cable connecting portion connected to the plate-like member or sandwiched between at least two plate-like members, one end connected to the first cable, and the other end connected to a second cable different from the first cable. A connecting bracket, comprising:   2. The connecting fitting according to claim 1, wherein a contact surface of the plate-like member with the first cable is plastically deformed by a tightening force of the bolt connection. The plate member is composed of at least two split plate members,
The connecting bracket according to claim 1 or 2, wherein the split plate-like members are bolted to each other. At least one of the split plate members is plastically deformed by the tightening force of the bolt connection,
The connecting bracket according to claim 3, wherein at least one of the split plate-like members other than the split plate-like member that is plastically deformed is a material that is not plastically deformed by a tightening force of the bolt connection.   The said metal plate and the said cable connection part are integrally formed, The connection metal fitting in any one of Claims 1-4 characterized by the above-mentioned.   The said metal plate and the said cable connection part are formed in a different body, The connection metal fitting in any one of Claims 1-4 characterized by the above-mentioned.   The connection fitting according to claim 6, wherein the cable connection portion is rotatable with respect to the first cable when sandwiched between at least two plate-like members. The cable connecting portion is
On the inner surface facing the first cable, the vicinity of the center is formed to bulge toward the first cable compared to the axial end of the first cable, and is supported by the first cable. A support part;
The connection fitting according to claim 6 or 7, wherein one end is connected to the support portion, and the other end has a connection portion connected to the second cable.

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